Improvement in saw-frame



waited Stabat THOMAS H. ROLLINs,

OF DETROIT, MAINE.VV

Letters Patent No. 99.596, dated February 8, 1870.

IMPROVEMENT IN' SAW-FRAME.

The Schedule referred to in these Letters Patent and mking part of the same To all whom it may concern.-

Be it known that I, THOMAS H. RoLLrNs, of Detroit, in the county of Somerset, and State of' Maine,

` have invented a new and useiul Improvement in Buck- Sawk Frames; and Ido hereby declare that the following is a full, clear, and exact description thereof', which will enable others skilled in the art to make and use the sai ne, reference being had to the accompanying drawing, Forming part of this specification.

The object of this invention is to provide means for straining wood or buck-saws in their frames, by lever purchase, and to so connect the cross-bar with the stands, that the stands shall not be weakened by cntting mortises therein, as will be hereinafter more fully described.

The accompanying drawing represents the saw and frame, with the straining-device applied, showing the cross-bar sockets in section.

Similar letters of reference indicate corresponding parts.

A is-the saw, which-is attached to the stands B B', in the ordinary manner.

C is the cross-bar.

D is the straining-lever.

E is a rod, which is looped over the end of the stand B, as usual, and connected with the bottom of the curve c' of the lever, as seen at f.

G is another-rod, which is looped over the end of the stand B', in the nsnal manner, and attached to the horizontal portion of the lever, as seen at h.

On this horizontal'portion of the straining-lever D, there are one or more notches or hooks, l1', to receive the loop ot' the rod G.

I `is a plate, fastened to the top of the bar C, provided with orifices, to receive the end of the straininglever, as seen in the drawing, the plate being shown in vertical section. It will be seen, that by this arrangement, the saw is strained by a simple movement ofthe lever from one hole to another, while any slack may be taken up by movingr the loop h, on the rod G, from one notch to another, on the top ofthe lever.

J J represent socket-pieces on the stands, for receiving and holding the cross-bar. These socket-pieces are formed with flangesk, as seen on E, between which thestand is held, whileI between the flanges k, on the bottom of the socket, there is a projecting flange, or points, as seen on B, which enter the stands, and prevent the. socket from slipping or becorninr displaced, thus avoiding;` the necessity of making mortises, and thereby weakening,r them.

Having thns described myinvention,

Vhat l claim as new, and desire to secure by Let.-

. ters Patent, is-

A buck-saw frame, provided with a straining-lever, D, loop-rods G E, perforated plate I, cross-bar C, and sockets J all constructed as described.

THOMAS H. ROLLINS.

NVitnesses J OTHAM S. SMITH, EDWIN A. PRATT. 

